H2020Индивидуална стипендия2019–2020

HMST-PC · Synthesis of Hybrid Metal-Semiconductor Tetrapod Photocatalysts for Improved Water Splitting

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2019-01-01 → 2020-12-31
Финансиране от ЕС: 170 509 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Хибридни нанокристали от метал и полупроводник се изследват за разлагане на вода до водород и кислород чрез слънчева светлина. Това помага за разработването на системи, които съхраняват слънчевата енергия под формата на химични връзки за бъдеща употреба.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Synthesis of Hybrid Metal-Semiconductor Tetrapod Photocatalysts for Improved Water Splitting

The direct harvesting of sunlight to generate fuels or electricity represents a highly attractive means to produce clean energy, with the input being a free and unlimited natural resource. While modern solar cells are capable of directly generating electricity from sunlight, low efficiencies and challenges storing the power for later use points to a need for new technologies. To this end, “solar-to-fuel” generating systems are designed to store energy from sunlight in the form of chemical bonds which can be later broken with mild external stimulus to provide energy on-demand. Of these, the most studied system is the photoinduced solar water splitting reaction, wherein liquid H2O is broken down into hydrogen gas (H2) and oxygen gas (O2) using semiconductor photocatalyst. In recent years, semiconductor nanoparticles (SC-NPs) have been extensively studied as photosensitizers in solar energy-to-fuel conversion systems, but no system exists that can efficiently achieve both H2 and O2 evolution from H2O. The overall objective of this proposal as written was to explore enabling opportunities towards and develop, a family of hybrid metal-semiconductor nanocrystals that would serve as stand-alone visible-light photocatalysis for the efficient generation of fuels from sunlight. Building upon a rich body of literature related to nanoscale photocatalysis and energy storage, the proposed work was designed to make significant contributions to the action field by addressing key challenges hindering the efficient use of nanoscale photocatalysts to date, and integrating these advances into a proof-of-concept energy conversion system.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

While modern photovoltaic cells (PVCs) are capable of efficiently and directly generating usable electricity from sunlight, daily variations in availability of this key resource during day/night cycles points to a need to store the generated power for use when the PVCs are not active. To this end, systems that directly use the energy of sunlight to drive chemical reactions that otherwise would be thermodynamically uphill have been vigorously studied since the late 1960s. Such “solar-to-fuel” generating systems are targeted to store energy from sunlight in the form of chemical bonds which can be later broken with mild external stimulus to provide energy on-demand. Of these systems, the most studied for the collection and storage of solar energy is the photoinduced solar water splitting reaction, wherein liquid water is broken down into hydrogen gas (H2) and oxygen gas (O2) using semiconductor photocatalysts. This proposal seeks to develop a novel nanoscale Hybrid Metal-Semiconductor Tetrapod Photocatalyst (HMST-PC) for solar energy conversion. This catalyst is specifically designed for the efficient generation of fuels (H2 and O2) from only sunlight and H2O. The nanocatalyst will consist of: i) four light-absorbing CdS antennae, ii) an embedded CdSe core to guide internal energetics, iii) a binary noble metal cocatalyst for H2 evolution, and iv) a robust metal-oxide cocatalyst for O2 evolution. In addition to developing an all-in-one solar photocatalyst, fundamental scientific advances made in this action will serve to i) expand the toolbox of precision nanomaterials synthetic methods available to researchers, ii) address long standing issues of charge-extraction in nanoscale catalyst systems, and iii) develop new methods to stabilize functional photocatalysts against photocorrosion. These advances will help enable future researchers to engineer better (more well-defined) model systems with a level of synthetic precision not available in the past.

Оригинален текст от CORDIS (на английски).

Участници

TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD · HaifaКоординаторИзраел